Merge pull request MicrosoftDocs#6199 from MicrosoftDocs/chrisda

Updates to SmtpClientAuthenticationDisabled param per email

Author: chrisda

exchange/exchange-ps/exchange/Set-CASMailbox.md

@@ -1280,20 +1280,15 @@ This parameter is available only in the cloud-based service.
 The SmtpClientAuthenticationDisabled parameter specifies whether to disable authenticated SMTP (SMTP AUTH) for the mailbox. Examples of clients and services that require authenticated SMTP to send email messages include:
 
 - POP3 and IMAP4 clients.
-
 - Devices with scan to email capability.
-
 - Workflow applications that send email notifications.
-
 - Online services that send messages using internal email addresses in the organization.
 
 Valid values for this parameter are:
 
 - $true: Authenticated SMTP is disabled for the mailbox.
-
 - $false: Authenticated SMTP is enabled for the mailbox.
-
-- blank ($null): This is the default value. The authenticated SMTP setting for the mailbox is controlled by the corresponding SmtpClientAuthenticationDisabled parameter on the Set-TransportConfig cmdlet for the whole organization. By default, authenticated SMTP is enabled for the organization ($false), which means authenticated SMTP is also enabled for the mailbox.
+- blank ($null): This is the default value. The authenticated SMTP setting for the mailbox is controlled by the corresponding SmtpClientAuthenticationDisabled parameter on the Set-TransportConfig cmdlet for the whole organization.
 
 To selectively enable authenticated SMTP for specific mailboxes only: disable authenticated SMTP at the organizational level ($true), enable it for the specific mailboxes ($false), and leave the rest of the mailboxes with their default value ($null).
 

exchange/exchange-ps/exchange/Set-TransportConfig.md

@@ -1199,18 +1199,14 @@ This parameter is available only in the cloud-based service.
 The SmtpClientAuthenticationDisabled parameter specifies whether to disable authenticated SMTP (SMTP AUTH) for the whole organization. Examples of clients and services that require authenticated SMTP to send email messages include:
 
 - POP3 and IMAP4 clients.
-
 - Devices with scan to email capability.
-
 - Workflow applications that send email notifications.
-
 - Online services that send messages using internal email addresses in the organization.
 
 Valid values for this parameter are:
 
-- $true: Authenticated SMTP is disabled.
-
-- $false: Authenticated SMTP is enabled. This is the default value.
+- $true: Authenticated SMTP is disabled. This is the default value for organizations created after January 2020.
+- $false: Authenticated SMTP is enabled.
 
 The corresponding parameter that controls authenticated SMTP on individual mailboxes is the SmtpClientAuthenticationDisabled parameter on the Set-CASMailbox cmdlet. The default mailbox value is blank ($null), which means the mailbox setting is controlled by this organizational setting.